Detailed Notes: Legal For Use On Pre-Pollution Controlled Vehicles~ For Vehicles Manufactured Before Emission Control Regulations Were Imposed~ Vehicles Pre-Emmision Regulations Are Considered UnControlled Vehicles~ For Engines Transplanted Into An Uncontrolled Or Pre-Pollution Vehicle~ Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Or Race Use Or Engine Swaps~ To Be Used On Vehicles That Are Designed Exclusively For Racing Use Only~ Not Legal For Use On Vehicles That Are Registered For Street Use